Vulcanization is a chemical process by which sulphur is added to rubber to create a more durable material. It was first developed and tested by Vitale Bramani, who used the technology in the production of soles for his company, Vibram. Today, the production of vulcanized soles is the United States is nonexistent, and even in Japan, there are only two factories that are still able to output vulcanized shoes. Both of these factories are located in Kurume, Kyushu.

*These sneakers fit larger than Converse Chuck Taylor All-Stars Sneakers. We suggest going down 1/2 to 1 full size for the right fit.

**Ryo is a US 8.5 in most major footwear brands, but is a US 8 for these sneakers.